Research on Fault Dynamic Response Analysis Method of Complex System Based on Virtual Diagnostic Environment

This paper establishes the dynamic equation of typical system based on the digital prototype, and acts the virtual dynamic loading spectrum on the digital prototype, and constructs the virtual diagnostic environment, and replaces the actual equipment in the virtual environment, and reappears its kinematics and dynamics state in the complex operating conditions, and analyses the geometric elements and dynamics response during the movement. State response is used to predict the trends of individual characteristic parameters. In engineering practice, the fault state of the equipment will be reflected in the characteristic parameters of the model. In this paper, a fault prediction simulation scheme based on virtual diagnosis environment is established, and three key components are tracked and simulated. The kinematics and dynamics state characteristic simulation based on digital prototype is introduced into the fault prediction of mechanical system. In the process, the development trend and maximum threshold of equipment fault characteristic parameters are simulated numerically. This fault pattern recognition method breaks through the limitation of on-line monitoring in previous studies. It can not only ensure the safety of equipment operation, but also effectively reduce pollution and make full use of diagnostic resources. It also has great social and economic benefits for improving the monitoring ability of equipment operation quality.